A landmark for insulation since 1933
A wide product range
Saint-Gobain ISOVER AB manufacturers glass wool insulation in Sweden. With our products and our knowledge we contribute to energy savings in society. Our head office is in Billesholm in the southern part of Sweden, where we also manufacture glass wool.
Besides glass wool we also sell ULTIMATE insulation and foams manufactured by other companies. We are the only supplier in Sweden to offer a complete range of insulation products with glass wool, ULTIMATE and foams. We use the ISOVER brand for glass wool and ULTIMATE and the STYROFOAM™ and Styrolit brands for foams.
ISOVER Scandinavia
ISOVER in Sweden has a very close cooperation with its sister company in Denmark. The two companies cooperate under the name ISOVER Scandinavia. Thus we can offer more products and higher competence to our customers.
A part of a global group
Saint-Gobain ISOVER AB is a part of the global Saint-Gobain Group based in France. Saint-Gobain was founded in 1665. As a producer, processor and distributor of materials, such as glass, ceramics, plastics and cast iron, Saint-Gobain transforms raw materials into advanced products for use in our daily lives, as well as developing tomorrows new materials.
Saint-Gobain is one of the leading industrial groups in the world. The Insulation Division within Saint-Gobain uses ISOVER as a common international brand.
The history of the company
Billesholms Glasulls AB was founded in 1933 as a replacement for the mining industry in Billesholm that was shut down. Glass wool, then a new and untested insulation material, saved the small village. The name Gullfiber was used until 1999 and was developed into one of the strongest brands in Sweden.
1933 – Billesholms Glasulls AB is founded
1963 – Saint-Gobain becomes part owner
1967 – The brand is changed to Gullfiber
1986 – Saint-Gobain becomes sole owner
1988 – The daughter company Gullfiber Akustik AB becomes Ecophon AB
1999 – The brand is changed to ISOVER Gullfiber
2000 – The company name is changed to Saint-Gobain ISOVER AB
2002 – The brand is changed to ISOVER
2002 – The ISOVER companies of Sweden and Denmark start cooperating as ISOVER Scandinavia. 
Insulation and the Climate Issue - brochure
